Volatile silicon compounds

ABSTRACT

Novel volatile silicon compounds are disclosed which are very suitable for use in cosmetic and household products.

This is a continuation of application Ser. No. 404,720, filed on Sept.8, 1989, now abandoned, which was a continuation-in-part of U.S.application Ser. No. 168,720, filed Mar. 16, 1988, now U.S. Pat. No.4,874,868.

Volatile silicon compounds have found wide acceptance in a number ofdifferent types of products ranging from cosmetics to antifreezeformulations. Such silicon compounds are good solvents for a variety ofmaterials and serve to give excellent feel on surfaces such as skin andhair.

The most common types of volatile silicon compounds are linear andcyclic siloxanes having from one to about seven siloxane groups. Whilethese are the most common, there are other types which have beendisclosed. Included among such other silicon compounds are those in U.S.Pat. No. 4,207,424. June 10, 1980 to Winnick -- ##STR1##

Additional disclosures of volatile silicon compounds are in U.S. Pat.No. 4,355,062, Oct. 19, 1982 to Wang et al. Certain alkyl linearsiloxanes such as ##STR2## are disclosed in U.S. Pat. No. 4,376,087,Mar. 8, 1983 to Poliniak et al. Cyclic silicones different from thosementioned above are disclosed in U.S. Pat. No. 4,364,837. Dec. 21, 1982to Pader. Still other volatile silicon compounds are disclosed inJapanese unexamined applications JP 9108-046. Oct. 14, 1974; JP1102-019, Sept. 7, 1976; JP 607-824. June 15, 1981; JP 6139-527, Oct.31, 1981; and JP 7035-526, Feb. 26, 1982.

Although the references discussed above disclose a variety of volatilesilicon compounds, there is still the need for additional materialswhich meet the requirements of cosmetic and household products.

It is therefore an object of the present invention to provide novelvolatile silicon compounds.

It is a further object to provide novel silicon compounds which havegood solvency properties.

It is a further object of the present invention to provide novel siliconcompounds which have good compatibility with conventional cosmetic andhousehold product ingredients.

These and other objectives will become readily available from thedetailed disclosure below.

All percentages and ratios herein are by weight unless otherwisespecified. Additionally, all measurements are made at 25° C. unlessotherwise specified.

SUMMARY OF THE INVENTION

The present invention relates to novel silicon compounds of thefollowing structures:

a) Linear siloxanes ##STR3## wherein 1) X=1 to 4, 2) total carbons≦14,3) R can be independently C₁ -C₁₀ alkyl or trialkyl siloxy and 4) atleast one R per molecule must be selected from R₁ R₂ where R₁ =C₁ -C₉alkylene (preferably C₁ -C₄ alkylene) and R₂ is selected from (i)--O-R₃wherein R₃ =C₁ -C₅ alkyl, (ii)--C₁ -C₇ ketone, ##STR4##

b) Cyclic siloxanes ##STR5## wherein 1) Y=3 to 6,2) total carbons≦14, 3)R can be independently C₁ -C₁₀ alkyl, and 4) at least one R per moleculemust be selected from --R₁ R₂ where R₁ =C₁ -C₄ alkylene and R₂ isselected from (i)--O-R₃ where R₃ =C₁ -C₅ alkyl, (ii)--C₁ -C₇ ketone,##STR6## wherein 1) Z=1 to 4, 2) total carbons≦14, 3) R can beindependently C₁ -C₁₀ alkyl or trialkyl (C₁ -C₃) siloxy, and 4) at leastone R per molecule must be selected from --R₁ R₂ where R₁ =C₁ -C₉alkylene (preferably C₁ -C₄ alkylene) and R₂ is selected from ##STR7##

(iv)--CN, and

(v)--C₁ -C₇ ketone.

The boiling point of all of these novel silicon compounds at 760 mm is≦260° C.

DETAILED DESCRIPTION OF THE INVENTION

The present invention as summarized above relates to novel siliconcompounds which find use in cosmetic and household products.Specifically, the silicon compounds are novel linear siloxanes a) cyclicsiloxanes b) and silanes c).

Examples of these materials include, among many others, the following:##STR8##

The novel silicon compounds find use in a variety of cosmetic andhousehold products. Components of such products are set forth in thefollowing paragraphs.

Hair Care Products

The hair care products using the novel silicon compounds of the presentinvention contain the volatile silicon compound along with a carrierbenefiting from the silicon compound. The term "carrier", as usedherein, means one or more compatible vehicles which are suitable foradministration to the hair of a human or lower animal The term"compatible", as used herein, means that the components of the carrierare capable of being commingled with the novel silicon compounds of thepresent invention, and with each other, in a manner such that there isno interaction which would substantially reduce the ability of the haircare products to provide its benefit under ordinary use situation.

Carriers suitable for use with the volatile silicon compound such asshampoos and cream rinse conditioners to hair are well known in the art,and their selection can be made without difficulty by a person skilledin the art. For example, carriers which are suitable are described inmore detail in U.S. Pat. No. 3,577,517, to Kubot et al, issued May 4,1971; U.S. Pat. No. 3,907,984, to Calvert et al, issued Sept. 23, 1975;U.S. Pat. No. 4,012,501, to Farber, issued Mar. 15, 1977; U.S. Pat. No.4,223,009, to Chakrabarti, issued Sept. 16, 1980; and U.S. Pat. No.4,283,384, to Jacquet et al, issued Aug. 11, 1981; the disclosures ofall these patents being incorporated herein by reference in theirentirety.

Shampoo compositions useful with the novel silicon compounds of thisinvention utilize conventional components. The shampoos comprise fromabout 0.1% to about 20% of the volatile silicon compound; from about 5%to about 60% of a synthetic surfactant; and the balance water. Suitablesurfactants include ammonium lauryl sulfate, ammonium laureth sulfate,triethylamine lauryl sulfate, triethylamine laureth sulfate,triethanolamine lauryl sulfate, triethanolamine laureth sulfate,monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate,diethanolamine lauryl sulfate, diethanolamine laureth sulfate, lauricmonoglyceride sodium sulfate, sodium lauryl sulfate, sodium laurethsulfate, potassium lauryl sulfate, potassium laureth sulfate, laurylsarcosine, cocoyl sarcosine, ammonium cocoyl sulfate, ammonium laurylsulfate, sodium cocoyl sulfate, sodium lauryl sulfate, potassium cocoylsulfate, potassium lauryl sulfate, triethanolamine cocoyl sulfate,triethanolamine lauryl sulfate, monoethanolamine cocoyl sulfate,monoethanolamine lauryl sulfate, sodium tridecyl benzene sulfonate andsodium dodecyl benzene sulfonate.

Shampoos can also contain a variety of nonessential optional components.Such conventional optional ingredients are well known to those skilledin the art, e.g., preservatives, such as benzyl alcohol, ethyl paraben,propyl paraben and imidazolidinyl urea; hair setting/styling polymerssuch as acrylate polymers and copolymers, cationic surfactants, such ascetyl trimethyl ammonium chloride, lauryl trimethyl ammonium chloride,tricetyl methyl ammonium chloride, stearyldimethyl benzyl ammoniumchloride, and di(partially hydrogenated tallow) dimethylammoniumchloride; thickeners and viscosity modifiers such as a diethanolamide ofa long-chain fatty acid (e.g. PEG 3 lauramide), block polymers ofethylene oxide and propylene oxide, sodium chloride, sodium sulfate,polyvinyl alcohol, ethyl alcohol and water-soluble polymers such asxanthan gum, hydroxyethyl cellulose, guar gum and starch; pH adjustingagents, such as citric acid, succinic acid, phosphoric acid, sodiumhydroxide, sodium carbonate; perfumes; dyes; and sequestering agents,such as disodium ethylenediamine tetraacetate. Such agents generally areused individually at a level of from about 0.01% to about 10%,preferably from about 0.5% to about 5.0% by weight of the composition.

Another carrier useful with the present silicon compounds are cremerinses/conditioners. Such a carrier preferably comprises two essentialcomponents: a lipid vehicle material and generally a cationic surfactantvehicle material. Such carriers are generally described in the followingdocuments, all incorporated by reference herein: Barry, "The SelfBodying Action of the Mixed Emulsifier Sodium Dodecyl Sulfate/CetylAlcohol", 28 J. of Colloid and Interface Science 82-91 (1968); Barry, etal., "The Self-Bodying Action of AlkyltrimethylammoniumBromides/Cetostearyl Alcohol Mixed Emulsifiers; Influence of QuaternaryChain Length", 35 J. of Colloid and Interface Science 689-708 (1971);and Barry, et al., "Rheology of Systems Containing Cetomacrogol1000--Cetostearyl Alcohol, I. Self Bodying Action", 38 J. of Colloid andInterface Science 616-625 (1972).

Lipid materials include naturally or synthetically-derived acids, acidderivatives, alcohols, esters, ethers, ketones, and amides with carbonchains of from 12 to 22, preferably from 16 to 8, carbon atoms inlength. Fatty alcohols and fatty esters are preferred; fatty alcoholsare particularly preferred.

Lipid materials among those useful herein are disclosed in Bailey'sIndustrial Oil and Fat Products. (3d edition, D. Swern, ed. 1979)(incorporated by reference herein). Fatty alcohols included among thoseuseful herein are disclosed in the following documents, all incorporatedby reference herein: U.S. Pat. No. 3,155,591, Hilfer, issued Nov. 3,1964; U.S. Pat. No. 4,165,369, Watanabe, et al., issued Aug. 21, 1979;U.S. Pat. No. 4,269,824, Villamarin, et al., issued May 26, 1981;British Specification 1,532,585. published Nov. 15, 1978; and Fukushima,et al., "The Effect of Cetostearyl Alcohol in Cosmetic Emulsions", 98Cosmetics & Toiletries 89-102 (1983). Fatty esters included among thoseuseful herein are disclosed in U.S. Pat. No. 3,341,465, Kaufman, et al.,issued Sept. 12, 1967 (incorporated by reference herein).

Preferred esters for use herein include cetyl palmitate andglycerylmonostearate. Cetyl alcohol and stearyl alcohol are preferredalcohols. A particularly preferred lipid vehicle material is comprisedof a mixture of cetyl alcohol and stearyl alcohol containing from about55% to about 65% (by weight of mixture) of cetyl alcohol.

Representative creme rinse and conditioner compositions comprise fromabout 0.5% to about 12% of the silicon compound, from about 0.5% toabout 3% of the lipid vehicle material, and from about 0.2% to about 4%of the cationic surfactant vehicle material.

Deodorant/Antiperspirants

Deodorant/antiperspirant compositions utilizing the volatile siliconcompounds include a variety of components.

Antiperspirant Actives

Antiperspirant compositions comprise at least one anti-perspirantactive. Antiperspirant actives useful in the present invention are wellknown in the art, and are disclose in Miller and Hoag, "Personal CareProducts", Handbook of Nonprescription Drugs. 8th Edition, Chapter 19,pages 397-417 (American Pharmaceutical Association; 1986), thedisclosures of which are incorporated herein by reference in theirentirety. Antiperspirant actives useful herein are also morespecifically disclosed in European Patent Application Publication No.28.853. published May 20, 1981, by Beckmeyer et al.; and European PatentApplication Publication No. 117,070. published Aug. 29, 1984, by May,the disclosures of both these patent specifications being incorporatedherein by reference in their entirety. Anti-perspirant actives include,for example, aluminum chlorohydrates, aluminum chloride, sodium aluminumchlorohydroxy lactate, buffered aluminum sulfate, and aluminum zirconiumchlorohydrates.

Preferred are astringent metallic salts including the inorganic andorganic salts of aluminum, zirconium and zinc, and mixtures thereof.Particularly preferred are the aluminum and zirconium salts, such asaluminum halides, aluminum hydroxyhalides, zirconyl oxyhalides, zirconylhydroxyhalides, and mixtures thereof. Such metal salts, and complexesthereof, are described in European Patent Specification Publication No.117,070, to May, published Aug. 29, 1984, and U.S. Pat. No. 4,137,306,to Rubino et al., issued Jan. 30, 1979, the disclosures of both thesepatent specifications being incorporated herein by reference in theirentirety.

Preferred aluminum salts include those of the formula:

    Al.sub.2 (OH).sub.a Cl.sub.b.xH.sub.2 O

wherein a is from about 2 to about 5; a+b=6; x is from about 1 to about6; and wherein a, b, and x may have non-integer values. Particularlypreferred are aluminum chlorhydroxides referred to as "5/6 basicchlorhydroxide", wherein a 5; and "2/3 basic chlorhydroxide", whereina=4. Processes for preparing aluminum salts are disclosed in thefollowing documents, all incorporated by reference herein in theirentirety: U.S. Pat. No. 3,887,692, to Gilman, issued June 3, 1975; U.S.Pat. No. 3,904,741, to Jones et al , issued Sept. 9, 1975; U.S. Pat. No.4,359,456, to Gosling et al., issued Nov. 16, 1982; and British PatentSpecification 2,048,229, to Fitzgerald et al., published Dec. 10, 1980.Mixtures of aluminum salts are described in British Patent Specification1,347,950, to Shin et al., published Feb. 27, 1974, the disclosures ofwhich are incorporated herein by reference in their entirety.

Zirconium salts are also preferred for use in antiperspirantcompositions of the present invention. Such salts are of the generalformula:

    ZrO(OH).sub.2-a Cl.sub.a.xH.sub.2 O

wherein a is from about 1 to about 2, preferably from about 1.5 to about1.87; x is from about I to about 7; and wherein a and x may havenon-integer values. These zirconium salts are disclosed in BelgiumPatent Specification 825,146. to Schmitz, issued Aug. 4, 1975, thedisclosures of which are incorporated herein by reference in theirentirety. Particularly preferred zirconium salts are those complexesalso containing aluminum and glycine, commonly known as "ZAG complexes".Such ZAG complexes contain aluminum chlorhydroxide and zirconylhydroxychloride of the formulae detailed above. These compounds in ZAGcomplexes are disclosed in the following patent documents, allincorporated by reference herein in their entirety: U.S. Pat. No.2,814,585, to Daley, issued Nov. 26, 1957; U.S. Pat. No. 3,679,068, toLuedders et al., issued Feb. 12, 1974; U.S. Pat. No. 4,017,599, toRubino, issued Apr. 12, 1977; U.S. Pat. No. 4,120,948, to Shelton,issued Oct. 17, 1978; and British Patent Specification 2,144,992, toCallaghan et al., published Mar. 20, 1985.

The antiperspirant actives in total typically comprise from about 1% toabout 50% by weight of the composition of the present invention, morepreferably from about 5% to about 40%, and most preferably from about 5%to about 30%.

Deodorant/Antiperspirant Carrier

The selection of carriers for use with the volatile silicon compounds ofthe present invention is readily made by one skilled in the art based onthe form of the composition being prepared, for example, aerosol spray,roll-on lotion, or stick. Antiperspirant carriers are described indetail in European Patent Application Publication No. 28,853, publishedMay 20, 1981, by Beckmeyer et al.; and European Patent ApplicationPublication No. 117,070, published Aug. 29, 1984, by May; thedisclosures of both these patent specifications being incorporatedherein by reference in their entirety. Carrier materials suitable foruse for various composition forms are also described in detail asfollows:

(i) Stick Antiperspirant Carriers

Antiperspirant compositions in stick form contain the volatile siliconcompound, which may function as a liquid emollient and preferablycontain one or more non-volatile emollients. Such materials includefatty acid and fatty alcohol esters, water-insoluble ethers andalcohols, polyorganosiloxanes, and mixtures thereof. Emollients amongthose useful herein are described in Cosmetics, Science and Technology27-104 (M. Balsam and E. Sagarin ed. 1972), and U.S. Pat. No. 4,202,879,to Shelton, issued May 13, 1980 (both incorporated by reference herein).

The present compositions in stick form preferably contain a non-volatilesilicone oil as an emollient material. Such silicone oils includepolyalkylsiloxanes, polyalkyarylsiloxanes, and polyethersiloxanecopolymers. The essentially non-volatile polyalkyl siloxanes usefulherein include, for example, polydimethyl siloxanes with viscosities offrom about 5 to about 100,000 centistokes at 25° C. Among the preferrednon-volatile emollients useful in the present compositions are thepolydimethyl siloxanes having viscosities from about 10 to about 400centistokes at 25° C. Such polyalkyl siloxanes include the Vicasilseries (sold by General Electric Company) and the Dow Corning 200 series(sold by Dow Corning Corporation). Polyalkylaryl siloxanes include polymethylphenyl siloxanes having viscosities of from about 15 to about 65centistokes at 25° C. These are available, for example, as SF 1075methylphenyl fluid (sold by General Electric Company) and 556 CosmeticGrade Fluid (sold by Dow Corning Corporation). Useful polyether siloxanecopolymers include, for example, a polyoxyalkylene ether copolymerhaving a viscosity of about 1200 to 1500 centistokes at 25° C. Such afluid is available as SF-1066 organosilicone surfactant (sold by GeneralElectric Company). Polysiloxane ethylene glycol ether copolymers arepreferred copolymers for use in the present compositions.

Antiperspirant compositions in stick form further preferably contain oneor more materials having wax-like characteristics and having a meltingpoint of from about 65° C. to about 102° C. Such waxes include beeswax,spermaceti, carnauba, baysberry, candelilla, montan, ozokerite, ceresin,paraffin, hydrogenated castor oil (castor wax), synthetic waxes such asFisher-Tropsch waxes, microcrystalline wax, and mixtures thereof. Castorwax is a preferred high-melting point wax useful herein. Suchhigh-melting point waxes among those useful herein are disclosed in U.S.Pat. No. 4,049,792. to Elsnau, issued Sept. 20, 1977 (incorporated byreference herein).

(ii) Aerosol Spray Deodorant/Antiperspirant Carriers

The present compositions in aerosol spray form preferably contain one ormore volatile materials, herein "aerosol propellants", which in agaseous state, carry the other components of the spray composition inparticulate or droplet form. The aerosol propellants useful in thepresent invention typically have a boiling point within the range offrom about -45° C. to about 5° C. The aerosol propellants are liquifiedwhen packaged in conventional aerosol containers under pressure. Therapid boiling of the aerosol propellant upon leaving the aerosolcontainer aids in the atomization of the other components of the presentinvention.

Aerosol propellants useful in the compositions of the present inventionin spray form include those well known in the art. Such aerosolpropellants include the chemically-inert hydrocarbons such as propane,n-butane, isobutane and cyclopropane, and mixtures thereof, as well ashalogenated hydrocarbons such as dichlorodifluoromethane (propellant12), 1,1-dichloro-1,1,2,2-tetrafluoroethane (propellant 114),1-chloro-1,1-difluoro-2,2-trifluoroethane (propellant 115),1-chloro-1,1-difluoroethylene (propellant 142B), 1,1-difluoroethane(propellant 152A), and monochlorodifluoromethane, and mixtures thereof.Isobutane, used singly or admixed with other hydrocarbons, is preferredfor use in the present aerosol spray antiperspirants.

Another preferred material for use in the aerosol compositions inaerosol spray form is a silicone gum. As referred to herein, "siliconegum" materials useful in the present compositions are thosenon-functionalized siloxanes having a viscosity of from about 500,000 toabout 100,000,000 centistokes at 25° C. These materials are incorporatedin the present compositions at a level of from about 0.05% to about5.0%, preferably from about 0.10% to about 2.0%. Preferred silicone gumsinclude linear and branched polydimethyl siloxanes, of the followinggeneral formula:

    (CH.sub.3).sub.3 SiO--[Si CH.sub.3).sub.2 O].sub.n --Si(CH.sub.3).sub.3

wherein n is from about 2,000 to about 15,000, preferably from about2,000 to about 7,000. The silicone gums useful herein may also besubstituted with non-electronegative substituents. Silicone gums amongthose useful herein are available from a variety of commercial sources,including X2-1346 and Dow Corning 200 Fluid (manufactured by Dow CorningCorporation), PS240 (manufactured by Petrarch Systems, Inc.), and SE76,SE30 and SE32 Silicone Gums (manufactured by General Electric Company).

The aerosol compositions may also contain a bulking or suspending agent,at levels of from about 0.1% to about 7%, preferably from about 0.4% toabout 3.5%. Such bulking/suspending agents include talc, colloidalsilicas, clays and mixtures thereof. Clays and colloidal silicas areparticularly preferred. Clay bulking/ suspending agents includemontmorillonite clays and hydrophobically treated montmorillonites,e.g., bentonites, hectorites and colloidal magnesium aluminum silicates.These materials are available from a variety of sources, includingLaponite hectorite (sold by Laponite Industries, Ltd.) and Veegummagnesium aluminum silicate (sold by R. T. Vanderbilt Co.). A preferredclay bulking/suspending agent is hydrophobically-treatedmontmorillonite, such as the Bentone bentonites (sold by NL Industries,Inc.). Colloidal silicas are also readily available, such as Cab-O-Silpyrogenic colloidal silica (sold by Cabot Corporation).

(iii) Roll-on Lotion Deodorant/Antiperspirant Carriers

Antiperspirant/deodorant compositions of the present invention inroll-on lotion form typically comprise carrier materials similar tothose utilized in aerosol spray forms except that no aerosol propellantis required. Antiperspirant/deodorant compositions in roll-on lotionform, and carrier materials useful therein, are described in detail inEuropean Patent Application Publication No. 28,853, published May 20,1981, by Beckmeyer et al., the disclosures of which are incorporatedherein by reference in their entirety.

Additional active components include bacteriostats and fungistats. Theparticular non-active components that may be useful will depend upon theform of application that is desired. Such components include, forexample, emollients, colorants, perfumes, and emulsifiers. Optionalcomponents useful herein are described in the following documents, allincorporated by reference herein: U.S. Pat. No. 4,049,792, to Elsnau,issued Sept. 20, 1977; Canadian Patent 1,164,347, to Beckmeyer, et al.,issued Mar. 27, 1984; European Patent Specification 117,070, to May,published Aug. 29, 1984; and Geria, "Formulation of StickAntiperspirants and Deodorants," 99 Cosmetics & Toiletries 55-60 (1984).

Generally, the deodorant/antiperspirant carriers in total comprise fromabout 40% to about 99% by weight of the compositions of the presentinvention, preferably from about 55% to about 95%, and most preferablyfrom about 67% to about 94%.

METHOD OF MANUFACTURE OF VOLATILE SILICONS

The novel silicon compounds of the present invention can be prepared bya number of different synthetic routes which are well known and broadlyused by workers skilled in the art.

Linear Siloxane Derivatives

These compounds are usually prepared from two reactions. Ahydrosilylation reaction between dimethylchloro silane and an olefinicfunctional molecule is the first step. This is done between 60°-100° C.for 5-20 hours in the presence of a peroxide and/or U.V. light. Theresultant product is distilled to remove impurities. The distillate isthen hydrolyzed with trimethyl chloro silane (and optionally with athird reactant, dimethyl dichloro silane). This reaction is carried outwith excess water and usually HCl as catalyst. The resultant product isan oily layer on top of the water. This oily phase is distilled toisolate and purify the novel compound. The chart below exemplifiesprecursors used for some of the novel linear siloxane compounds.

    ______________________________________                                        Precursors                                                                           Olefinic                                                               Silane Compound   Novel Linear Silicon Compound                               ______________________________________                                        dimethyl chloro silane                                                               methyl allyl ether                                                                        ##STR9##                                                   dimethyl chloro silane                                                               vinyl imidazol                                                                            ##STR10##                                                  ______________________________________                                    

Cyclic Siloxane Derivatives

The synthetic route and reaction conditions for these are very similarto the linear materials. There are differences. In the hydrosilylationstep, methyl dichloro silane (or other alkyl dichloro silane) is used inplace of the dimethyl chloro silane. In the hydrolysis step, theco-reactant is dimethyl dichloro silane rather than trimethyl chlorosilane. The resultant products are cyclic. The chart below exemplifiesprecursors used for some of the novel cyclic siloxane compounds.

    ______________________________________                                        Precursors                                                                            Olefinic                                                              Silane  Compound  Novel Cyclic Silicon Compound                               ______________________________________                                        methyl dichloro silane                                                                ethyl vinyl ketone                                                                       ##STR11##                                                  methyl dichloro silane                                                                butyl vinyl ether                                                                        ##STR12##                                                  ______________________________________                                    

Silane Derivative

Silanes are prepared by reacting a commercially available hydrosilanewith the appropriate commercially available olefinic functionalmolecule. This is usually done at 60° -100° C. for 5-20 hours in thepresence of a peroxide (such as acetyl peroxide) and/or UV light. Theresultant product of this reaction is distilled to isolate the desiredcompound from impurities. The chart below exemplifies precursors usedfor some of the novel silane compounds.

    ______________________________________                                        Precursors                                                                            Olefinic                                                              Silane  Compound    Novel Silane                                              ______________________________________                                        trimethyl silane                                                                      acryl- amide                                                                               ##STR13##                                                trimethyl silane                                                                      vinyl pyrollidone                                                                          ##STR14##                                                ______________________________________                                    

The following nonlimiting examples of the present invention are givensolely for illustration and are not to be construed as limitations ofthis invention. Many variations are possible without departing from thespirit and scope thereof.

EXAMPLE I

The following is a highlighting rinse representative of the presentinvention.

    ______________________________________                                        Component               Weight %                                              ______________________________________                                        D & C Red #17           0.10                                                  Volatile Silicon Compound A.sup.4                                                                     5.00                                                  Cetyl Alcohol           2.00                                                  Ditallow Dimethyl Ammonium Chloride                                                                   1.00                                                  Ceteareth-20            1.00                                                  Kathon CG               0.04                                                  Double Reverse Osmosis Water                                                                          q.s.                                                  ______________________________________                                    

EXAMPLE II

The following is a shampoo representative of the present invention.

    ______________________________________                                        Component            Weight %                                                 ______________________________________                                        Ammonium Lauryl Sulfate                                                                            15.00                                                    Jaguar HP-60.sup.1   1.00                                                     G.E. SE 30.sup.2     1.00                                                     Volatile Silicon Compound D.sup.4                                                                  1.00                                                     Kathon CG.sup.3      0.04                                                     Double Reverse Osmosis Water                                                                       q.s.                                                     ______________________________________                                         .sup.1 Hydroxypropyl guar gum offered by Hitek Polymers Inc.                  .sup.2 Silicone gum offered by General Electric.                              .sup.3 Offered by Rohm and Haas.                                              .sup.4 Volatile silicon compounds as identified on pages 5-6.            

What is claimed is:
 1. Volatile silicon compounds having the formula ##STR15## wherein 1) X=1 to 4, 2) total carbons≦14, 3) R can be independently C₁ -C₁₀ alkyl or trialkyl siloxy, and 4) at least one R per molecule must be selected from --R₁ R₂ where R₁ =C₁ -C₉ alkylene and R₂ is selected from (i) --O--R₃ wherein R₃ =C₁ -C₅ alkyl, ##STR16## wherein the boiling point of all of these novel silicon compounds at 760 mm is ≦260° C.
 2. Volatile silicon compounds according to claim 1 having the structure: ##STR17## wherein 1) X=1 to 4, 2) total carbons ≦14, 3) R can be independently C₁ -C₁₀ alkyl or trialkyl siloxy, and 4) at least one R per molecule must be selected from --R₁ R₂ where R₁ =C₁ -C₄ alkylene and R₂ is selected from (i)--O--R₃ wherein R₃ =C₁ -C₅ alkyl, ##STR18##
 3. A volatile silicon compound according to claim 2 having the formula: ##STR19## 